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Signal Generator Module AD9850 DDS Sine Square 0-40MHz Wave

The DDS Signal Generator Module is a powerful and precise waveform generator built around the AD9850 chip from Analog Devices, ideal for electronics enthusiasts and professionals. Capable of producing two sine waves and two square waves, it delivers low-noise, high-quality signals with frequency output up to 70 MHz. Its flexible interface supports both serial and parallel data input, and it integrates seamlessly with Arduino boards for a wide range of hobby or advanced signal processing applications.

Package Includes:

  • 1 x AD9850 DDS Signal Generator Module

103.95 AED 103.95 AED (Tax included)

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Specifications:

  • Frequency Range: Up to 70 MHz
  • Waveform Output: 2 Sine Waves, 2 Square Waves
  • Data Input: Serial & Parallel (jumper selectable)
  • Chip: AD9850 (Analog Devices Inc.)
  • Output Stability: High precision and low noise
  • Sine Harmonics: Noticeable above 20–30 MHz
  • Voltage Control: Comparator reference via potentiometer
  • Compatibility: Easily interfaces with Arduino

Features:

  1. Generate two sine and two square waveforms
  2. 70 MHz low-pass filter ensures waveform quality
  3. Jumper-selectable serial/parallel input for flexibility
  4. Uses stable and precise AD9850 chip
  5. Clean sine output up to 30 MHz
  6. Adjustable square wave duty cycle via comparator reference
  7. Simple integration with Arduino using labeled pinout
  8. Wide range of applications from test equipment to RF projects
  9. Low-noise signal with high frequency accuracy

Pinout:

The pin description starts from the left of the potentiometer:

AD9850 DDS Signal Generator Module Pinout, Features, Circuit & Datasheet

AD9850 DDS Module Pinout (Control Pins)
Pin Name Type Description
VCC Power +5V supply input (some boards support 3.3–5V logic)
GND Power Ground
W_CLK Input Serial clock input (used to shift data into DDS register)
FQ_UD Input Frequency update (loads shifted data into active register)
DATA Input Serial data input (40-bit frequency & control word)
RESET Input Resets the DDS chip
AD9850 DDS Module Pinout (Output Pins)
Pin Name Type Description
SINE OUT Analog Output Sine wave output (0–40 MHz typical usable range)
SQUARE OUT Digital Output Square wave output (TTL level)

What do the D0 to D7 do?

  • They form an 8-bit parallel data bus.
  • Used to load the 40-bit frequency tuning word (5 bytes total).
  • Data is latched using:
    • W_CLK (write clock)
    • FQ_UD (frequency update)
    • RESET

Important Notes

  • Most Arduino projects use serial mode (only DATA, W_CLK, FQ_UD, RESET).
  • Parallel mode is faster but requires more MCU pins.
  • If you're not using parallel control, D0–D7 can remain unconnected.

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